I didn't see this video before. As I said, this house is the very common typical Japanese house in Minecraft. If you look for some other videos on youtube, you'll find thousands of these. If you look at my house, I don't use sandstone but wool cause I think it looks good with wool (and I don't like the sandstone designe of MK). Moreover my house has three levels and a two levels basement. We both had the idea of a room on the roof but mine is clearely different (japanese garden). The dimensions are different too (11x13 for my house).

The most difficult part and the originality of the project was to make a 6 levels house with the limitations of the server (6 blocks below and 12 upper). You can find in this small space :
- a kitchen
- a small pond
- a living room with TV flatscreen and a library
- a space for the chests under the stairs
- a bedroom
- a working desk
- some free space on level 3 because I had no idea
- a japanese garden on the roof with a little courtyard
- a bar
- a little paintings room
- a private club with poledance, tables and chairs
- a private showroom
everything in a 13x11x18 space :)

There is not even an inspiration but I invite you to visit a few japanese inspired servers to see that this style is very common again.